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1、Timewillpiercethesurfaceoryouth,willbeonthebeautyoftheditchdugashallowgroove;Janewilleatrare!Abornbeauty,anythingtoescapehissicklesweep•-ShakespeareScientistsaredoingexperimentsonliveanimalsforthepurposeofresearchnowadays.Somepeoplebelievethatthisisnotonlycruelbut
2、alsounnecessary;othersthinkitisintheinterestofmankindasawhole■DiscussThefirstreasoncanbeseenbyeverypersonisthatresultsofexperimentsonsomecertainanimalscanhelpscientists.Scientistscandeterminewhetherthesesortsofsubstancewhichareusedinlaboratoryarefeasibleornotbyana
3、lyzingthereactionoftheanimals.Sometimes,itisnotonlythebestwaybutalsotheonlyapproachduetodangeroftheexperimentsthatcouldnotoccuronthehumanbeing.Thesecondreasonformypropensityfortheabovestatementisthatthescientistscankeepresearchingwithdifferentways.Itisflexibleande
4、conomicalforexpertstodoit,eventhoughtheyfailtoattainwhattheywant.Furthermore,theymayrepeatprocessmoreeasily.However,ontheotherhand,wecannotdenythatsomepeoplewanttoreachtheirachievementsbykillingtheanimalscruelly.Sosomethinghastobedonetoimprovethetechnologyandequip
5、mentsinlaboratory,meanwhile,tomakesurethesebehaviorsarelegal.Manypeoplearguethatinordertoimproveeducationalqualitycontinuously,studentsareencouragedtomakecommentsorevencriticismonteachers・Othersthinktherespectanddisciplineintheclassroomwilldisappear・Whichopiniondo
6、youprefer?Therearesomemajorcausesforit.Inthefirstinstance,theimprovementofstudentsisthefinalgoalofeducation.Onlybygivingcommentonteachers'performancecanletteachersknowtheprocessofstudents,developmentclearly.Furthennore,thecriticismisthestimulustoteachers^self-perf
7、ectionandimprovementineducationalquality・Lastbutnotleast,thecriticismitselfisakindoffeedbackandcommunicationbetweenteachersandstudents,lackofwhichwillaffecttheeducationaloutcomeafterwards・Ifthestudentshavecouragetomalwcommentsontheirteachers,theywillhavemoreconfid
8、encetoconquerthedifficultiesinthefuture.AsaChineseproverbsays,“thewavesbehinddriveonthosebehind,sothenewexcelstheold.”Teacherswillfindtheirowndisadvanta